I'm looking for a downhaul cleat for my Balboa 24 mast. They are cleats that slide into the mast slot and are locked in place. I've seen them in O'Day 17 and Catalina 22 part schematics but can't find them online. The O'Day was a clam cleat and the Catalina a horn cleat. I think I'd prefer the clam cleat but either is better than nothing.